Envelop.



F. ROGALSKI.

ENVELOP.

APPLICATION FILED 0111.30, 1916.

Patented Apr. 10, 1917.

2 SHEETS-SHEET l me Nmws Pneus cm nora-uma. wnsmua mui n n 4F. ROGALSKI.

ENVELOP.-

APPLICATION FILED ocr. 30. 1916.

1,221,907. Patented Apr. 1o, 1917.

2 SHEETS-SHEET 2.

FRANK ROGALSKI, 0F DETROIT, MICHIGAN.

FFTME.

ENVELOP.

-Specica'tion of Letterslatent.

Patented Apr. 10, 1917.

Application lied October 30, 1916. Serial No. 128,398.

To all wlwm t may concern.'

Be it known that I, FRANK RoGnLsiii, a subject of the Czar of Russia, and a resident of Detroit, in the county of Vayne and State of Michigan, have invented certain new and useful Improvements in Envelops, of which the following is a specification.

This invention relates to improvements in envelops such as are intended for mailing purposes, and has as its principal object the piovision of means combined with the envelop whereby the inclosure cannot become lost should the ordinary closing or sealing flap become loosened, thus providing an envelop of special secure character.

This and other like objects, such as the provision of extra strength, and neatness of appearance, 'are attained by the novel design and construction hereafter described and shown in the accompanying drawings, forming a part of this disclosure, and in which Figure 1 is a view of the blank extended at length indicating the crease lines and gummed portions.

Fig. 2 is a plan view of the same, the lateral elements having been folded and secured in position.

Fig. 3 is a similar plan view, the minor longitudinal flap being shown in folded position.

Fig. 4 is a rear plan view of the envelop as folded for transmission, and

Fig. 5 is an enlarged transverse sectional View taken on line 5--5 of Fig. 4.

The form of the blank is clearly indicated in Fig. 1, it being composed of a substantially rectangular center portion 10, from the two longer sides of which extend tab elements 11 and 12 respectively, the same being creased to fold along the lines 14 and 15, other creases 16 being formed near the ends of the blank, substantially in register with the ends of the tab elements 11 and 12, extensions 17, projecting beyond the crease lines for a limited distance, ending in narrow tapered projections 18 and 19 having rounded ends of such length that when the elements 17 are folded over the body of the blank 10, the rounded ends of the extensions 18 and 19 overlap and are caused to adhere by means of the gummed surface 21 on the extension 18, engaging with the corresponding end of the tab 19.

These two end elements, when folded, form in effect a bar or strip at the rear of the envelop uniting and holding the ends in position and leaving an opening both above and below the strip, the space between the bar and portion 10 being adapted to receive the inclosure in the ordinary way, while the space 25 below the barpermits the inclosure to make contact with the flap 11 when bent upon the crease line 15, the inner area of the flap being provided with gum, a portion of which will adhere to the inclosure, while the gum along its margin will adhere to the bar or strip formed by the ends 18 and 19, reinforcing and holding them together, at the same time securing the inclosure so that it cannot become accessible or lost inadvertently except the envelop be torn asunder.

The outer flap 12 is providedwith gum along its marginal edges, as shown in Figs.

1 and 3, so as to be secured when folded along the crease line 14 to the edge of the lower tab 11 in a manner clearly indicated in Fig. 4, thus securing the envelop in an e'ective manner.

In operation, the completed envelop is provided in the fdrm shown in Fig. 2, and the inclosure inserted below the strip formed by the united elements 18 and 19; the flap 11 is folded and the gummed part moistened so as to adhere along its edges to the elements 17 and bar, the central portion becoming aiiixed to the inclosure, whereupon the opposite flap or tab is moistened and applied in the usual manner.

When it is desired to open the envelop, the fiap 12 may be cut along the folding line so as to permit grasping ofthe inclosure, which, when forcibly drawn outward, will tear the adhering portion of the flap 11 or separate from it. Thus it will be seen that should the ordinary cover flap 12 fail to adhere to the back of the envelop, that the inclosure will not become lost, as it is held in position until forcibly torn away.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

tirely gummed flap being adapted to adhere to thebar thus formed subsequently to seal` l0 ing the outer flap.

Signed at Detroit, in the county of Vayne, and State of Michigan, October, 1916.

In an envelop, a blank provided with foldable flaps along both its longitudinal edges, one of said flaps. being covered over its entire inner area with gum and the other along its marginal edges, end flaps formed With said blank having narrow extending projections engageable When folded to form a bar across the back of the envelop, said en- FRANK ROGALSAKI.

Copies of this patent may be obtained for -ive cents each, by addressing the Commissioner of Patents, Washington, D. J. 

